Home / 12,118.09-16,722.88-6,812.95

Finding the Fourth Proportional to 12,118.09, 16,722.88 and 6,812.95

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Solution

The fourth proportional to 12,118.09, 16,722.88 and 6,812.95 is: 9,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.09 : 16,722.88 = 6,812.95 : x
  2. Step 2: Convert to fraction form
    12,118.09/16,722.88 = 6,812.95/x
  3. Step 3: Cross multiply
    12,118.09x = 16,722.88 × 6,812.95
  4. Step 4: Simplify right side
    12,118.09x = 113,932,145.30
  5. Step 5: Solve for x
    x = 113,932,145.30/12,118.09
  6. Step 6: Final answer
    x = 9,401.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.